Electronic flash device



FIG. 1 is a left front perspective view of an electronic flash device showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top-plan view thereof;

FIG. 5 is a bottom-plan view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a right side elevational view thereof. 

The ornamental design for an electronic flash device, substantially as shown and described. 